Photosynthesis is a complex food-making plant process that only uses CO2, sunlight, and some nutrients. This process is so complex that scientists still haven’t figured out the whole process. All we know is that when clorophyll panels absorb sunlight, they vibrate rapidly, spouting charged electrons, which are carried along and compressed into little batteries by proteins. These batteries are then sent off a “carbon-stitching machine” which pulls carbon out of the air and turns them into sugar and starch, which are used to grow. These processes give off water vapor and oxygen, which we breathe. Breathing this out again as CO2 restarts the whole process. The plant is constantly doing this and so produces a small flow of air.